36438431 has 2 divisors, whose sum is σ = 36438432. Its totient is φ = 36438430.

The previous prime is 36438403. The next prime is 36438491. The reversal of 36438431 is 13483463.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36438431 is a prime.

It is a super-2 number, since 2×36438431² = 2655518507483522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36438491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18219215 + 18219216.

It is an arithmetic number, because the mean of its divisors is an integer number (18219216).

Almost surely, 2^36438431 is an apocalyptic number.

36438431 is a deficient number, since it is larger than the sum of its proper divisors (1).

36438431 is an equidigital number, since it uses as much as digits as its factorization.

36438431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 32.

The square root of 36438431 is about 6036.4253494929. The cubic root of 36438431 is about 331.5277525152.

The spelling of 36438431 in words is "thirty-six million, four hundred thirty-eight thousand, four hundred thirty-one".